Home / 143,571.75-198,125.51-79,040.46

Finding the Fourth Proportional to 143,571.75, 198,125.51 and 79,040.46

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Solution

The fourth proportional to 143,571.75, 198,125.51 and 79,040.46 is: 109,073.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,571.75 : 198,125.51 = 79,040.46 : x
  2. Step 2: Convert to fraction form
    143,571.75/198,125.51 = 79,040.46/x
  3. Step 3: Cross multiply
    143,571.75x = 198,125.51 × 79,040.46
  4. Step 4: Simplify right side
    143,571.75x = 15,659,931,448.13
  5. Step 5: Solve for x
    x = 15,659,931,448.13/143,571.75
  6. Step 6: Final answer
    x = 109,073.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.